The TEC20 provides the redundant control of two Bard wall-mounts at a competitive price.  The electronic controller features:

• Adjustable timer switches units 1, 3, 7, 14 or 28 days.
• 2 Stage Cool / 2 Stage Heat thermostat.
• Dedicated terminals for a field supplied fire suppression system (de-energizes both air conditioners in the event of a fire).
• LED lights indicate the lead unit.
• Low voltage isolation circuit.
• Speed up jumper to test timer between primary and secondary unit.